Especificaciones:Sensor size: 22.5mmColor: BlackDistance detection: 0.3 – 2.5 metersBeep alarm starts at: 1,5 metersRated voltage: DC 12V + 2Operating current: 5mA ~ 20mAUltrasonic frequency: 40kHzOperating temperature central: -30°C ~ 70°COperating temperature display: -20°C ~ 60°CSensor cable size: 2.25 metersDisplay cable size: 5 meters